. ß ß ,, •, .... •. •, •'i 'i7 ' "':' •t',.. '•,, ß ::. ., Figures 17 and 18. Bleaching. Figures 19 and 20. Polymer treatment.
'• ,•5•'-•%.:.: . . •:?-- •...--• . .?• '• •, . '.. ...... .../.• _.•:.• '• ..... .. .... •. •. :.-•. . :• .-'• '?.-"-z :•,• ::: .• •. •. '• '-.. •'• - •.: ?.' .... ,... :• •. '•, •-. : : •. : ß '-•. .•.:,. z.: •. •.•: :-. '• ' . •. .... -..-. ". :• ' . •. '• . '• r .. % .... .. '•' .. ½•,, •. •. ..:•/-'-b'() %• '•-• •...' [: ,J• '• .• ... - .•.- •. ..- •. ........ •'• :?•¾: ..... ?.• .... 2•-•'":•:• .%,.... •,• •e• .... ß ...... Figures 21 and 22. Polymer treatment. F/gures 23 and 24. Cuticle debris, surface and section respectively. Facing page 701
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